Lenovo A730 All-in-One IdeaCentre - Manual (Page 58)

a. Line up the holes on the new scalar board with the mounting holes on the middle frame and
secure it with the 5 screws.
b. Connect all the cables to the new scalar board.
c. Reattach the scalar shielding to the middle frame with the 3 screws.
Step 12. Reattach the rear cover to the LED panel.
Step 13. Reattach the hinge to the chassis, and reconnect the touch and LED panel cables back to the
motherboard.
Step 14. Reattach the base cover and secure it with the screws.
Replacing the touch control board
Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
To replace the touch control board:
Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating
system, and turn off the computer and all attached devices.
Step 2. Unplug all power cords from electrical outlets.
Step 3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)
cables, and any other cables that are connected to the computer. Refer to “Left and right view”
and “Rear view” for help with locating the various connectors.
Step 4. Remove the base cover. Refer to “Removing the base cover”.
Step 5. Remove the hinge from the chassis. Refer to “Removing the hinge from the chassis”.
Step 6. Remove the rear cover. Refer to “Removing the rear cover”.
Step 7. Disconnect all the touch cables from the touch control board.
Step 8. Remove the 2 screws that secure the touch control board to the middle frame.
Step 9. Lift up the touch control board to remove it.
Step 10. To install the new touch control board:
52 IdeaCentre A730Hardware Maintenance Manual